Page 926 - Foton Workshop Manual - Tunland (AT)

04-780 DIAGNOSTICS - AIR CONDITIONING SYSTEM

(a) Disconnect battery negative cable.
(b) Unplug the relay R4 of starter.

(f) Measure the voltage based on the value in
the following form.

04 Standard voltage
Multimeter connection Standard value

R04（1）- ground ＜ 2Ω

Check whether the result is normal?
Yes> go to step 4

No > Maintenance or replace harness.

4 . Check the relay of air conditioner compressor
(a) Disconnect battery negative cable.
(b) Unplug the relay R14 of air conditioner compressor

(c) Check the relay of air conditioner compressor.

Standard resistance:

Multimeter
Specified
Conditions connection value
stitch

Normal
situation 1-2 Breakover

Apply power
supply voltage
to position 3-5 ＜2Ω
between stitch
3 and 5,

Check whether the result is normal?
Yes> go to step 5

No > Replace the relay of air conditioner compressor, and verify again whether the
failure exists.

5 . Check the harness and connectors (relay of air conditioner compressor - ground)

Page 926